diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index e2064ed3c7038f7b4270d9db96b64ef234b7d6ab..a3dcee624de3072261d1deb87bf12ca2d7ac8b74 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -175,6 +175,7 @@ struct request {
 		struct rb_node rb_node;	/* sort/lookup */
 		struct bio_vec special_vec;
 		void *completion_data;
+		int error_count; /* for legacy drivers, don't use */
 	};
 
 	/*